> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Kitty's Flowers - Pair of Bluetooth Wearable Brooches - Art by Physicist

**Type:** Product page · **SKU:** ADA5215 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/kitty-s-flowers-pair-of-bluetooth-wearable-brooches-art-by-physicist.html ([markdown](https://core-electronics.com.au/kitty-s-flowers-pair-of-bluetooth-wearable-brooches-art-by-physicist.html.md))

Kitty's Flowers is a pair of beautifully designed Bluetooth-wearable brooches, which can be programmed to interact with one another. The brooches are...

## Pricing

- **Price:** $129.95 (inc GST) — $118.14 AUD, exc GST
- **Quantity discounts:** 10+ $114.59 (exc GST) · 50+ $112.23 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA5215:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA5215:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

**Kitty's Flowers** is a pair of beautifully designed Bluetooth-wearable brooches, which can be programmed to interact with one another. The brooches are perfect for keeping loved ones by your side with Bluetooth connectivity. They are also a fun platform for kids to learn to program.

Jointly created by [Art by Physicist](https://shop.kittyyeung.com/) (Dr. Kitty Yeung) and DFRobot, they contain an integrated power management system, RGB LED lights, an accelerometer, a touch sensor, and a vibrating motor. The brooches support Arduino and Scratch programming and can be used as the core intelligent control unit for wearable products, interactive art installations, and new accessories. The brooches come in matched pairs. Learn how to reprogram the boards on the Bluetooth Wearable Brooches product wiki.

In addition to being ideal for decoration and interaction, they are perfect for educational purposes for users who want to learn programming.

**These come in a set of two per order, however, no batteries are included!** [Please purchase any TWO of Adafruit's Lithium ion polymer batteries (any size will work) to plug in](https://core-electronics.com.au/#). The board has a built in recharging circuit for Lipoly batteries.

##  Technical Details 

- **Specs:**
    - Microcontroller: [ATmega328](https://core-electronics.com.au/search/?q=ATmega328)
    - BLE chip type: TI CC2540
    - Supports Bluetooth HID
    - Debug Bluetooth module through AT command
    - Serial port communication
    - USB BLE firmware update
    - Power supply interface: USB / 3.7V lithium battery, JST connector
    - External power supply range: 7-12V
    - Bootloader: Arduino UNO
    - Size: 70mm x 70mm
    - Weight: 30g
    - Prototyped in the USA. PCB made in China.

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_3310.jpg)